How to Measure for Screw Top Lids (3 Steps)

When canning at home, it is important to always use the proper equipment. Glass canning jars, also known as mason jars, are some of the most commonly used containers for storing preserved goods. To ensure a properly sealed mason jar, it is essential to select a tight-fitting lid. Mason jars are available in many sizes, ranging from 1/2 pint to one gallon. Although they come in so many sizes, mason jars have two universal types of lids. Both have screw-top designs. The smaller mason jar lids are commonly named regular-mouth, and the larger lids are called wide-mouth. Mason jars of every capacity are available in both sizes of lids. To determine what type of lid you need, you must first measure the mouth of your jar. After that, you should be able to easily purchase the correct type of lid to fit.